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A femtosecond laser-inscribed fine-core long-period grating with low temperature sensitivity
X.-y. Ming,Q. Guo,Z.-k. Xue,X.-p. Pan,C. Chen and Y.-s. Yu
2020
Source PublicationChinese Optics
ISSN20951531
Volume13Issue:4Pages:737-744
AbstractIn order to reduce crosstalk caused by temperature during refractive index and strain testing, the temperature, refractive index and strain response characteristics of fine-core long-period fiber gratings were studied. A long-period fiber grating with a period of 50 m was successfully prepared on a single-mode fiber with a core diameter of 6 m using the femtosecond laser direct writing method. The results show that long-period fiber gratings processed with low laser energy in fine-core fibers have lower temperature sensitivity, and maintain a larger extinction ratio and better spectral quality. The loss peak of this fine-core long-period fiber grating drifts only 1.7 nm in the 20~700 temperature range. The grating is also highly responsive to changes in the refractive index. when ambient refractive index is in the range of 1.4065~1.4265, its sensitivity reaches 882.51 nm/RIU, and its strain sensitivity is 2.2 pm/. This fine-core long-period fiber grating can better reduce crosstalk caused by temperature in the refractive index and strain tests. Copyright 2020 Chinese Optics. All rights reserved.
DOI10.37188/CO.2020-0015
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Indexed ByEI
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Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/64524
Collection中国科学院长春光学精密机械与物理研究所
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GB/T 7714
X.-y. Ming,Q. Guo,Z.-k. Xue,X.-p. Pan,C. Chen and Y.-s. Yu. A femtosecond laser-inscribed fine-core long-period grating with low temperature sensitivity[J]. Chinese Optics,2020,13(4):737-744.
APA X.-y. Ming,Q. Guo,Z.-k. Xue,X.-p. Pan,C. Chen and Y.-s. Yu.(2020).A femtosecond laser-inscribed fine-core long-period grating with low temperature sensitivity.Chinese Optics,13(4),737-744.
MLA X.-y. Ming,Q. Guo,Z.-k. Xue,X.-p. Pan,C. Chen and Y.-s. Yu."A femtosecond laser-inscribed fine-core long-period grating with low temperature sensitivity".Chinese Optics 13.4(2020):737-744.
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